Seiko Cal. 0788 - 688

This Spring Drive model from 1973 features a 43mm Stainless Steel case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-cd4ad27715ff]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1973

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